KJT intrinsicically safety Namur proximity switch is mainly used in equipment and environment requiring explosion-proof, such as coal mine, petrochemical, etc. Namur signal is a standard signal suitable for a wide range of intrinsically safe digital input and frequency input in the world. Its suitability was as early as the German standard (din19234). Later, it became a European standard (EN 50227, DIN 60947-5-6). Namur signal is passive 2-wire system, nominal 8vdc power supply, 1mA} and 3mA switching signals. Namur sensors are intrinsically safe explosion-proof instruments, which are usually used in conjunction with isolated safety barriers.
KJT-NJK18 Series Proximity Sensor/ inductive Namur switch
Product model KJT-NJ-18
Installation mode Non buried
Detection distance 8mm
Outline specification M18*30
No load current > 2.2mA(OFF) />1.1mA(ON)
working voltage 8.2VDC
switching frequency 2KHz
Switching hysteresis < 15% (Sr)
Repetition accuracy < ±1.0%(Sr)
response time 0.05ms
working temperature - 25ºC-70ºC
temperature drift < ±1%(Sr)
delayed < 10ms
Sensing surface material POM
LED display NO
Degree of protection IP67
Features:
1) Note: Customize for cable length, sensing distance ,housing material and shape.
Metal cylinderical inductive sensor
2) Compact volume
3) High repeat orientation precision
4) Small volume for narowwness space
5) Strong protection distribution
6) Dustproof, vibration-proof, waterproof and oil-proof
7) With short-circuit protection and inverted connecting protection
8) Service life up to one million
9) Adopts envelop glue, temperature resist, oil-proof colophony in it
Products Advantage:
1. Contactless, no abrasion, high reliability.
2. LED indicator
3. Diameter from φ 4-M30, multi lengths available
4. Cable and connector connection optical
5. Stable performance with professional IC design
6. Short-circuit protection, reverse polarity protection
7. Wide applied in position controlling and counting function.
| Model |
KJT-NJK18 |
| Specification(mm) |
M18*30 |
| Mounting |
Flushed/ Non-flushed |
| Sensing distance |
5mm/ 8mm |
| Supply voltage |
8.2VDC |
| Output |
NAMUR |
| Return difference |
1-20% |
| Repeated accuracy |
<3% |
| Frequency |
2500Hz/ 2000Hz |
| Output display |
/ |
| Polarity protection |
/ |
| Insulation pressure resistance |
500 V/AC,50/60Hz,60s |
| Short-circuit protection |
/ |
| Ambient temperature |
-25~+70C |
| Ambient humidity |
35~95% |
| Protection degree |
IP67 |
| Housing material |
Stainless steel |
| Connection |
2m PVC Cable |
| Certification |
CE |
Quality standard
While continuously developing and expanding, kegit has formulated strict standards for product quality, and has passed iso9001:2015 international quality management system certification. All products have passed CE certification to ensure that product performance and quality reach the advanced level of similar international products and are in a leading position in the industry.
Industry application
KJT products include various industrial automation sensors, industrial safety products, measurement products, wireless transmission devices, etc. they are widely used in aerospace, navigation, railway, post and telecommunications, communication, elevator, textile, petrochemical, mining, metallurgy, machine tool, machinery, tobacco, packaging, printing, food, measurement, office, household appliances and other industries, Promote the development of automation industry.
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